Most Recent CompTIA XK0-005 Exam Questions & Answers

Prepare for the CompTIA Linux+ Certification Exam exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the CompTIA XK0-005 exam and achieve success.

The questions for XK0-005 were last updated on Nov 20, 2024.

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Question No. 1

A systems administrator needs to check if the service systemd-resolved.service is running without any errors. Which of the following commands will show this information?

Asystemct1 status systemd-resolved.service

Bsystemct1 enable systemd-resolved.service

Csystemct1 mask systemd-resolved.service

Dsystemct1 show systemd-resolved.service

Show Answer

Correct Answer: A

The commandsystemct1 status systemd-resolved.servicewill show the information about the service systemd-resolved.service. Thesystemct1command is a tool for managing system services and units. Thestatusoption displays the current status of a unit, such as active, inactive, or failed. The output also shows the unit description, loaded configuration, process ID, memory usage, and recent log messages. This command will show if the service systemd-resolved.service is running without any errors. This is the correct command to use to accomplish the task. The other options are incorrect because they either perform different actions (enable,mask, orshow) or do not show the status of the service (systemct1 show systemd-resolved.serviceonly shows the properties of the service, not the status).Reference:CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 14: Managing Processes and Scheduling Tasks, page 427.

Question No. 2

A systems administrator receives the following errors via email from the system log:

XFS (loop0): Metadata CRC error detected at xfs_agi_read_verify+0xcb/0xfe

XFS (loop0): First 128 bytes of corrupted metadata buffer

XFS (loop0): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x2 len 1 error 74

A few minutes later, the administrator starts receiving reports that some of the images in the company's website are not loading properly. The systems administrator runs some commands and receives the following outputs:

css

Output 1

NAME FSTYPE UUID MOUNTPOINT

sda ext4 02ae47-fe457-45bc /

sdb xfs 347c7056 /var/www/html

Output 2

DocumentRoot "/var/www/html"

Output 3

httpd.service - The Apache HTTP Server

Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)

Active: active (running) since Sun 1991-05-24 16:12:43 UTC; 30y ago

Main PID: 252 (httpd)

Which of the following would be the appropriate steps to take to solve this issue?

Asystemctl stop httpd umount /dev/sdb1 xfs_repair /dev/sdb1 mount /dev/sdb1 /var/www/html systemctl start httpd

Bumount /dev/sdb1 xfs_repair /dev/sdb1 xfs_metadump /dev/sdb1 mount /dev/sdb1 /var/www/html systemctl restart httpd

Cumount /dev/sdb1 systemctl stop httpd xfs_metadump /dev/sdb1 mount /dev/sdb1 /var/www/html systemctl start httpd

Dsystemctl stop httpd xfs_check -L /dev/sdb umount /var/www/html systemctl start httpd

Show Answer

Correct Answer: A

The error is related to XFS filesystem corruption on /dev/sdb1, where the website's images are stored. By stopping the Apache service, unmounting the filesystem, running xfs_repair, and remounting, the filesystem can be repaired, and the service can be restarted safely.

Question No. 3

Due to performance issues on a server, a Linux administrator needs to termi-nate an unresponsive process. Which of the following commands should the

administrator use to terminate the process immediately without waiting for a graceful shutdown?

Akill -SIGKILL 5545

Bkill -SIGTERM 5545

Ckill -SIGHUP 5545

Dkill -SIGINT 5545

Show Answer

Correct Answer: A

To terminate an unresponsive process immediately without waiting for a graceful shutdown, the administrator can use the commandkill -SIGKILL 5545(A). This will send a signal to the process with the PID 5545 that cannot be ignored or handled by the process, and force it to stop. The other commands will send different signals that may allow the process to perform some cleanup or termination actions, or may be ignored by the process.Reference:

[CompTIA Linux+ Study Guide], Chapter 6: Managing Processes, Section: Killing Processes

[How to Kill Processes in Linux]

Question No. 4

The journald entries have filled a Linux machine's /var volume. Which of the following is the best command for a systems administrator to use to free up the disk space occupied by these entries?

Ajournalctl ---rotate
journalctl --vacuum-time=ls

Bsystemctl stop systemd-journald
systemctl start systemd-journald

Crm -rf /var/log/journal
systemctl restart systemd-journald

Dpkill -HUP systemd-journald
systemctl restart systemd-journald

Show Answer

Correct Answer: B

systemctl stop systemd-journald systemctl start systemd-journald is the best approach among the given options. Stopping and starting the systemd-journald service can help in managing the disk space used by journal logs without manually deleting log files or using more aggressive cleanup methods. This method ensures that log management is handled gracefully by the system's own services.

Question No. 5

A Linux administrator is trying to remove the ACL from the file /home/user/dat

a. txt but receives the following error message:

Given the following analysis:

Which of the following is causing the error message?

AThe administrator is not using a highly privileged account.

BThe filesystem is mounted with the wrong options.

CSELinux file context is denying the ACL changes.

DFile attributes are preventing file modification.

Show Answer

Correct Answer: D

File attributes are preventing file modification, which is causing the error message. The output oflsattr /home/user/data.txtshows that the file has the immutable attribute (i) set, which means that the file cannot be changed, deleted, or renamed. The commandsetfacl -b /home/user/data.txttries to remove the ACL from the file, but fails because of the immutable attribute. The administrator needs to remove the immutable attribute first by using the commandchattr -i /home/user/data.txtand then try to remove the ACL again. The other options are incorrect because they are not supported by the outputs. The administrator is using a highly privileged account, as shown by the#prompt. The filesystem is mounted with the correct options, as shown by the output ofmount | grep /home. SELinux file context is not denying the ACL changes, as shown by the output ofls -Z /home/user/data.txt.Reference:CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 11: Managing Files and Directories, pages 357-358.

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